# from django.shortcuts import render,get_object_or_404
# from django.http import Http404

# # Create your views here.
# from django.http import HttpResponse,HttpResponseRedirect
# from .models import Question,Choice
# from django.template import loader
# from django.urls import reverse


# def index(request):
#     latest_question_list = Question.objects.order_by('-pub_date')[:5]
#     template = loader.get_template('polls/index.html')
#     context = {
#         'latest_question_list': latest_question_list,
#     }
#     return HttpResponse(template.render(context, request))


# def detail(request, question_id):
#     question = get_object_or_404(Question, pk=question_id)
#     return render(request, 'polls/detail.html', {'question': question})
# def vote(request, question_id):
#     question = get_object_or_404(Question, pk=question_id)
#     try:
#         selected_choice = question.choice_set.get(pk=request.POST['choice'])
#     except (KeyError, Choice.DoesNotExist):
#         # Redisplay the question voting form.
#         return render(request, 'polls/detail.html', {
#             'question': question,
#             'error_message': "You didn't select a choice.",
#         })
#     else:
#         selected_choice.votes += 1
#         selected_choice.save()
#         # Always return an HttpResponseRedirect after successfully dealing
#         # with POST data. This prevents data from being posted twice if a
#         # user hits the Back button.
#         return HttpResponseRedirect(reverse('polls:results', args=(question.id,)))

# def results(request, question_id):
#     question = get_object_or_404(Question, pk=question_id)
#     return render(request, 'polls/results.html', {'question': question})

from django.http import HttpResponseRedirect
from django.shortcuts import get_object_or_404, render
from django.urls import reverse
from django.views import generic

from .models import Choice, Question
from django.utils import timezone
from django.test import TestCase
from django.utils import timezone


class IndexView(generic.ListView):
    # model = Question
    template_name = 'polls/index.html'
    context_object_name = 'latest_question_list'

    def get_queryset(self):
        """Return the last five published questions."""
        # return Question.objects.order_by('-pub_date')[:5]
        return Question.objects.filter(
            pub_date__lte=timezone.now()
        ).order_by('-pub_date')[:5]


class DetailView(generic.DetailView):
    model = Question
    template_name = 'polls/detail.html'
    def get_queryset(self):
        """
        Excludes any questions that aren't published yet.
        """
        return Question.objects.filter(pub_date__lte=timezone.now())


class ResultsView(generic.DetailView):
    model = Question
    template_name = 'polls/results.html'


def vote(request, question_id):
    question = get_object_or_404(Question, pk=question_id)
    try:
        selected_choice = question.choice_set.get(pk=request.POST['choice'])
    except (KeyError, Choice.DoesNotExist):
        # Redisplay the question voting form.
        return render(request, 'polls/detail.html', {
            'question': question,
            'error_message': "You didn't select a choice.",
        })
    else:
        selected_choice.votes += 1
        selected_choice.save()
        # Always return an HttpResponseRedirect after successfully dealing
        # with POST data. This prevents data from being posted twice if a
        # user hits the Back button.
        return HttpResponseRedirect(reverse('polls:results', args=(question.id,)))

# class QuestionDetailViewTests(TestCase):
#     def test_future_question(self):
#         """
#         The detail view of a question with a pub_date in the future
#         returns a 404 not found.
#         """
#         future_question = create_question(question_text='Future question.', days=5)
#         url = reverse('polls:detail', args=(future_question.id,))
#         response = self.client.get(url)
#         self.assertEqual(response.status_code, 404)

#     def test_past_question(self):
#         """
#         The detail view of a question with a pub_date in the past
#         displays the question's text.
#         """
#         past_question = create_question(question_text='Past Question.', days=-5)
#         url = reverse('polls:detail', args=(past_question.id,))
#         response = self.client.get(url)
#         self.assertContains(response, past_question.question_text)
